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Non Metal-Oxide Containing Cooling Water Hose to Prevent Benzotriazole Absorption

IP.com Disclosure Number: IPCOM000108885D
Original Publication Date: 1992-Jun-01
Included in the Prior Art Database: 2005-Mar-23
Document File: 1 page(s) / 38K

Publishing Venue

IBM

Related People

Gallagher, RM: AUTHOR [+5]

Abstract

Disclosed is a method to eliminate benzotriazole/synthetic hose interactions in aqueous, closed-loop recirculating systems. Benzotriazole (BTA) is a common water soluble copper (Cu) specific corrosion inhibitor utilized in recirculating cooling systems to protect the Cu components from corrosion. Synthetic hose materials which utilize metal oxides in their formulation interact with the dissolved BTA, causing it to precipitate out on the surface of the hose material. This removal of BTA from solution leaves the Cu components vulnerable to attack. The use of a non metal-oxide containing synthetic hose material eliminates the interaction between the BTA and the hose, maintaining adequate BTA levels in solution to protect the system.

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This is the abbreviated version, containing approximately 100% of the total text.

Non Metal-Oxide Containing Cooling Water Hose to Prevent Benzotriazole Absorption

      Disclosed is a method to eliminate benzotriazole/synthetic hose
interactions in aqueous, closed-loop recirculating systems.
Benzotriazole (BTA) is a common water soluble copper (Cu) specific
corrosion inhibitor utilized in recirculating cooling systems to
protect the Cu components from corrosion.  Synthetic hose materials
which utilize metal oxides in their formulation interact with the
dissolved BTA, causing it to precipitate out on the surface of the
hose material.  This removal of BTA from solution leaves the Cu
components vulnerable to attack.  The use of a non metal-oxide
containing synthetic hose material eliminates the interaction between
the BTA and the hose, maintaining adequate BTA levels in solution to
protect the system.  One specific hose formulation that does not
cause BTA precipitation is peroxide-cured ethylene diene monomer
(EPDM).  A typical hose formulation of this type would include the
following ingredients:  EPDM or EPR blend, peroxide, co-agent, oil
extender, processing aid, antioxidant/antiozonant, and carbon black.
The exact proportions of the various ingredients can be varied to
achieve the desired ultimate properties.

      Disclosed anonymously.